SC-900 Practice Question: Describe the capabilities of Microsoft compliance solutions
Your organization uses Microsoft 365 and wants to automatically quarantine suspicious emails before they reach users' inboxes. Which solution should you configure?
⚠ Common exam trap
Watch out — candidates often confuse Microsoft Defender for Office 365 (email security) with Microsoft Sentinel (SIEM) or Microsoft Purview DLP (data protection), because all three are security-related, but only Defender for Office 365 performs inline email quarantine based on threat detection.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Microsoft Defender for Office 365
Microsoft Defender for Office 365 includes Exchange Online Protection (EOP) and advanced threat protection features such as Safe Attachments and Safe Links. These capabilities automatically quarantine suspicious emails—including those with malicious attachments, phishing URLs, or spoofed senders—before they reach user inboxes, based on policy-defined actions like 'Quarantine message'.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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Microsoft Purview Data Loss Prevention
Why it's wrong here
Microsoft Purview Data Loss Prevention (DLP) is designed to identify, monitor, and protect sensitive information across Microsoft 365 services. While DLP policies can prevent the sharing of sensitive data or apply encryption, its primary function is not to scan for or quarantine incoming malicious emails or attachments. It focuses on data content and movement, rather than active threat protection against email-borne malware or phishing.
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Microsoft Sentinel
Why it's wrong here
Microsoft Sentinel is a cloud-native Security Information and Event Management (SIEM) and Security Orchestration, Automation, and Response (SOAR) solution. It aggregates security data from various sources, detects threats, and automates responses based on alerts. However, Sentinel does not directly perform real-time email filtering or quarantine malicious emails at the mail flow level; it analyzes logs and alerts generated by dedicated email security services.
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Microsoft Intune
Why it's wrong here
Microsoft Intune is a cloud-based endpoint management solution focused on mobile device management (MDM) and mobile application management (MAM). It helps organizations manage devices, configure policies, and deploy applications to ensure device compliance and data protection. Intune does not possess capabilities for scanning incoming emails for threats or quarantining malicious messages within the email system itself, as its scope is device and application security.
- ✓
Microsoft Defender for Office 365
Why this is correct
Microsoft Defender for Office 365 provides comprehensive protection against sophisticated email and collaboration threats, including phishing, business email compromise (BEC), malware, and zero-day attacks. It actively scans emails, attachments, and links in real-time before they reach user inboxes. A core capability of Defender for Office 365 is its ability to automatically detect and quarantine malicious emails, preventing users from interacting with harmful content.
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Microsoft Entra ID
Key term
Safe Attachments
Safe Attachments is a Microsoft Defender for Office 365 feature that opens email attachments in a virtual sandbox to detect and block malicious content before they reach your inbox.
Key term
Exchange Online
Exchange Online is Microsoft's cloud-based email, calendar, and contact hosting service that is part of the Microsoft 365 suite, allowing organizations to manage corporate messaging without maintaining their own mail servers.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SC-900 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SC-900 exam.